Abstract
The crystal structures and the microwave dielectric properties of (1-x)CaTiO3-xCa(Mg1/3Nb2/3)O3 perovskite ceramic system have been investigated. (1-x)CaTiO3-xCa(Mg1/3Nb2/3)O3 solid solution exhibited orthorhombic crystal structures for all compositions. With x = 0.66, a new microwave dielectric ceramic material 0.34CaTiO3-0.66Ca(Mg1/3Nb2/3)O3 applicable to microwave devices is suggested and possesses the dielectric properties of a dielectric constant εr ∼ 48, a Q×f values ∼ 32,500 (at 6.7 GHz) and a τf value ∼-2 ppm/°C at 1450°C for 3 h. Further improvement of the Q×f value can be achieved by extending the sintering time to 6 h. It reveals a higher Q×f value of 34,000 (at 6.7 GHz) without degrading other microwave dielectric properties of 0.34CaTiO3-0.66Ca(Mg1/3Nb2/3)O3 ceramics.
| Original language | English |
|---|---|
| Pages (from-to) | 1645-1652 |
| Number of pages | 8 |
| Journal | Materials Research Bulletin |
| Volume | 36 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 2001 Jul 1 |
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
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Improved high Q value of CaTiO3-Ca(Mg1/3Nb2/3)O3 solid solution with near zero temperature coefficient of resonant frequency. / Huang, Cheng-Liang; Chen, Hui Liang; Wu, Chen Cher.
In: Materials Research Bulletin, Vol. 36, No. 9, 01.07.2001, p. 1645-1652.Research output: Contribution to journal › Article
TY - JOUR
T1 - Improved high Q value of CaTiO3-Ca(Mg1/3Nb2/3)O3 solid solution with near zero temperature coefficient of resonant frequency
AU - Huang, Cheng-Liang
AU - Chen, Hui Liang
AU - Wu, Chen Cher
PY - 2001/7/1
Y1 - 2001/7/1
N2 - The crystal structures and the microwave dielectric properties of (1-x)CaTiO3-xCa(Mg1/3Nb2/3)O3 perovskite ceramic system have been investigated. (1-x)CaTiO3-xCa(Mg1/3Nb2/3)O3 solid solution exhibited orthorhombic crystal structures for all compositions. With x = 0.66, a new microwave dielectric ceramic material 0.34CaTiO3-0.66Ca(Mg1/3Nb2/3)O3 applicable to microwave devices is suggested and possesses the dielectric properties of a dielectric constant εr ∼ 48, a Q×f values ∼ 32,500 (at 6.7 GHz) and a τf value ∼-2 ppm/°C at 1450°C for 3 h. Further improvement of the Q×f value can be achieved by extending the sintering time to 6 h. It reveals a higher Q×f value of 34,000 (at 6.7 GHz) without degrading other microwave dielectric properties of 0.34CaTiO3-0.66Ca(Mg1/3Nb2/3)O3 ceramics.
AB - The crystal structures and the microwave dielectric properties of (1-x)CaTiO3-xCa(Mg1/3Nb2/3)O3 perovskite ceramic system have been investigated. (1-x)CaTiO3-xCa(Mg1/3Nb2/3)O3 solid solution exhibited orthorhombic crystal structures for all compositions. With x = 0.66, a new microwave dielectric ceramic material 0.34CaTiO3-0.66Ca(Mg1/3Nb2/3)O3 applicable to microwave devices is suggested and possesses the dielectric properties of a dielectric constant εr ∼ 48, a Q×f values ∼ 32,500 (at 6.7 GHz) and a τf value ∼-2 ppm/°C at 1450°C for 3 h. Further improvement of the Q×f value can be achieved by extending the sintering time to 6 h. It reveals a higher Q×f value of 34,000 (at 6.7 GHz) without degrading other microwave dielectric properties of 0.34CaTiO3-0.66Ca(Mg1/3Nb2/3)O3 ceramics.
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U2 - 10.1016/S0025-5408(01)00652-3
DO - 10.1016/S0025-5408(01)00652-3
M3 - Article
VL - 36
SP - 1645
EP - 1652
JO - Materials Research Bulletin
JF - Materials Research Bulletin
SN - 0025-5408
IS - 9
ER -